JP2005002782A - Multipurpose hinge device having automatic return function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly reliable multipurpose hinge device applicable to any door regardless of coincidence between a rotary shaft and the rotary shaft of a door, and stabilizing an automatic restoring speed setting structure of a multistage. <P>SOLUTION: This multipurpose hinge device is constituted, by partitioning an inside space filled with oil of a housing 110 into upper-lower chambers 156 and 160, by connecting a piston 151 provided with one-way check valves 153a and 153b, to the lower end of a lifting piston rod 150. A first flow passage 150a for communicating the chambers 156 and 160 via a lower part of the piston rod 150, is connected to a control pipe 180. The control pipe 180 is inserted into an outer pipe 175 and an inner pipe 170. The outer pipe 175 and the inner pipe 170 are provided with first and second speed adjusting flow passages 179a and 179b for communicating an upper area of the inner pipe 170 with the lower chamber 160, and a third flow passage 179c for communicating a lower area of the inner pipe 170 with the lower chamber 160. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a multi-purpose hinge device having an automatic return function, and more specifically, in a hinge type hinge device of a left-right rotation type door or a hinge device of a vertical rotation type door, the rotation axis and the rotation axis of the door are the same. The present invention relates to a versatile hinge device that can be applied to any hinge device having a different rotation axis, and has a multi-stage automatic return speed setting structure that is stable and highly reliable.

  A hinge device is a device for connecting two members so that they expand or fold around one axis as needed, and a typical example is a hinge used between a door and a door frame. There are a type hinge device (including a horizontal movable portion) and a vertical opening / closing type hinge device (including a vertical movable portion) applied to a refrigerator, a mobile phone, a notebook, or the like.

  A hinge device for a hinge having a conventional automatic return function is known (for example, see Patent Document 1).

  Such a hinge device according to the prior art includes a fixed-side hinge plate fixed to the door frame, and a movable-side hinge plate fixed to the door side and interlocking with opening and closing of the door. In addition, a plurality of cylindrical hinge knuckles are provided on one side end of the fixed side hinge plate and one side end of the movable side hinge plate to bind the hinge plates together. An upper cap is screwed onto the fixed-side hinge knuckle, and a compression spring for providing a rotational force for the door is provided at the lower portion of the upper cap.

  In such a hinge device, when the door opens, the conversion head moves up and down by the repulsive force of the compression spring while rotating together with the movable hinge knuckle, and the moving distance by the guide pin that moves by the guide slot guide Is limited.

  In the conventional hinge device as described above, when the door is opened, the conversion head is raised by the rotation of the movable hinge plate, and when the door is closed, the conversion head is lowered by the elastic restoring force of the compression spring. The hinge device for the hinge adjusts the amount of pressure oil flowing through the reduction flow path and the first and second speed adjustment flow paths, and varies the lifting speed of the conversion head, thereby closing the door. Adjust.

  However, in the hinge device as described above, the conversion head that moves up and down by the rotation of the door is guided by the pair of guide pins, the guide pin is fixed to the hinge knuckle, and the cylinder and the conversion head are inside the four hinge knuckles. Since it has a built-in structure, the movable-side hinge knuckle must perform a rotational motion over a long period of time while receiving a high load. Therefore, there is a problem that the durability is inferior, the configuration is complicated, and the assembly productivity is poor.

  In addition, the compression spring for automatic return of the door is located on the upper side of the conversion head, and the hydraulic circuit for adjusting the return speed of the door is located on the lower side, making it difficult to reduce the overall length of the hinge device. In addition, since the length of the space where the compression spring is arranged is limited only to the upper side, a high restoring force cannot be given when the door is automatically restored, and thus it is difficult to apply to a large door.

  In addition, the connection structure of the hinge device, the fixed portion, and the movable portion can be applied only to the hinge device for hinges, and cannot be applied to a structure in which the center of the door and the center of the hinge device are different.

  Further, the hinge device for hinges has a disadvantage that it is inconvenient to use because there is no means for temporarily fixing the hinge so that the door cannot be rotated in a state where the door is opened at a certain angle.

  On the other hand, a hydraulic door closure and a spring type door closure are configured separately, and these are combined with each other to configure a hinge type door opening and closing device (see, for example, Patent Document 2).

  Since the door opening and closing device is used in combination with two closures, it is difficult to miniaturize, and there is no means for temporarily fixing the door so that it cannot be rotated in a state where the door is opened at a certain angle. However, when a large external force such as strong wind is applied to the door, there is a drawback that the door cannot be prevented from overspeeding.

  Further, there is disclosed a door hinge structure that includes an upper hinge and a lower hinge that do not employ a hydraulic circuit and that realizes an automatic return function (see, for example, Patent Document 3).

  This Patent Document 3, like the Patent Document 1, does not have an overspeed prevention function, and the return speed adjustment is set by the cam diagram angle of the raceway groove and the restoring force of the spring set in advance. The speed is determined according to the speed, and the speed cannot be adjusted according to the needs of the user.

  On the other hand, both ends of the pin fixed through the stem in a spiral long hole drilled in the peripheral wall of the stem and the slider are coupled via bearings, and a key is provided on the outer periphery of the slider, and a key groove is formed on the inner wall of the housing. By forming the structure, the slider is raised and lowered by the rotation of the stem, the elastic spring is compressed and the oil is compressed by the lowering of the slider, and the compressed oil is supplied to the base and the rod body. A door hinge having an oil passage and a hydraulic control structure that moves upward via a check valve is disclosed (see, for example, Patent Document 4).

  However, the hinge has a very complicated shape and structure of the oil passage, its workability is very poor, there is no function of temporarily stopping when the door is opened, and a high external force such as strong wind is applied to the door, the door There is a drawback that it is impossible to prevent overspeed. In addition, since the oil storage space is insufficient as a whole, when applied to large doors, when opening and closing the door, an excessive load is applied to each component, and the user must apply a relatively large force. There is.

On the other hand, conventionally, an optimized structure has not been proposed for a hinge device for a vertical rotating door applied to a Kimchi refrigerator or the like.
Korean Published Patent Publication No. 2001-27832 Specification Korea registered utility model 271646 specification Korean Patent Application Publication No. 2001-77142 Specification Korea registered utility model No. 238712 specification

  Accordingly, the present invention has been made in view of such problems of the prior art, and a first object thereof is a vertical rotation type applied to a hinge type hinge device of a general left-right rotation type door or a Kimchi refrigerator. It is an object of the present invention to provide a versatile hinge device that can be applied to any structure, such as a door hinge device, regardless of whether the rotation axis of the hinge device and the rotation axis of the door are matched or not.

  The second object of the present invention is to automatically return the door by changing the cam diagram angle of the lifting guide hole that guides the lifting of the piston together with the restoring force of the return spring and the flow control of the hydraulic circuit when the door is automatically returned. An object of the present invention is to provide a versatile hinge device having an automatic return function capable of controlling the speed and the return force.

  The third object of the present invention is to automatically return the door by setting the cam diagram angle of the lifting guide hole relatively larger than the door opening angle range of 15 to 90 ° in the door opening angle range of 0 to 15 °. In this case, it is an object of the present invention to provide a versatile hinge device that can be completely returned to the initial position of the door even if a compression spring is used instead of a torsion spring as a return spring.

  The fourth object of the present invention is that the first speed at which the door opening angle is 90 to 30 ° is the fastest due to the cam diagram angle of the lifting guide hole that guides the lifting of the piston and the structure of the hydraulic circuit when the door automatically returns. Until the door is close to the initial position by setting the return speed to the 3rd speed, which is the slowest second speed at 30-15 °, 15 ° to 0 °, which is slower than the first speed but faster than the second speed. The object is to provide a multipurpose hinge device that is automatically closed while shifting to a low speed after being close to a high speed.

  The fifth object of the present invention is to set the cam diagram angle of the elevating guide hole for guiding the lift of the piston to zero (0) when the door opening angle is 90 to 130 °, and to set the door by the return spring. It is an object of the present invention to provide a versatile hinge device that can prevent the automatic return of the door, maintain the open state of the door, and set an arbitrary opening angle.

  A sixth object of the present invention is to provide a multipurpose hinge device having an overspeed prevention function capable of preventing an accident by blocking the return of the door due to a large force such as a strong wind. .

  A seventh object of the present invention is to provide a multi-purpose hinge device in which a user can freely and easily set an oil flow amount for determining a return speed when the door is automatically returned outside the device. .

  The eighth object of the present invention is to provide a multi-purpose hinge device having a structure that controls the return speed of the door and the return speed setting structure that is simple and stable, has high operation reliability, and has excellent assembly / workability. There is to do.

  The ninth object of the present invention is to provide a vertical space structure that can accommodate as large a return spring as possible with respect to the entire length of the apparatus, and to provide a large restoring force when the door is automatically restored, thereby reducing the user's size. An object of the present invention is to provide a multi-purpose hinge device that can return a large door by force.

  The tenth object of the present invention is a versatile application that minimizes frictional noise generation and uneven wear by applying a bearing structure to minimize friction between the fixed portion and the rotating shaft and adopting a roller for the guide pin. It is to provide a hinge device.

  An eleventh object of the present invention is to provide a versatile hinge device that is optimized for a vertically rotating door, is compact, and has a low-cost structure.

  A twelfth object of the present invention is to provide an embedded and non-implanted multipurpose hinge device having a beautiful appearance.

  In order to achieve the above object, according to the first aspect of the present invention, the present invention has a tubular housing, a through hole in a central portion, and is coupled to an upper end portion for sealing the upper portion of the housing. The upper seal packing and the first and second spiral elevating guide holes are provided in a movement symmetrical structure along the outer peripheral surface of the cylindrical body, and the upper end portion of the cylindrical body passes through the through hole of the upper packing. The shaft protrudes outside the housing, and when the door rotates, the camshaft is rotated by an external force relative to the housing, and is fixed to the inner peripheral surface of the housing, and the first and second vertical guides are vertically opposed to each other. A cylindrical guide tube in which a hole is formed and a cylindrical main body of the camshaft is rotatably inserted therein, and both end portions of the first and second guide holes through the first and second lifting guide holes, respectively. Drooping A guide pin inserted into the guide hole, and a central portion of the guide pin penetrates the upper end portion, and the cam shaft rotates along the first and second vertical guide holes and the cylindrical body of the cam shaft. A piston rod having a recess formed on the lower surface thereof, which is raised and lowered in a sliding manner along the inner peripheral surface of the housing, and is communicated with the outer peripheral surface at a right angle, and the outer peripheral surface is slidably inserted into the inner peripheral surface of the housing. A space is divided into an upper chamber and a lower chamber, a lower end portion of the piston rod is coupled to a central through hole formed in the central portion, and a first chamber that communicates the upper chamber and the lower chamber through the piston rod and the central through hole. A piston that has a flow path and moves up and down in conjunction with the movement of the piston rod, and is provided on the piston, and is opened when the piston is lowered and closed when the piston is raised. And at least one check valve for selectively forming a second flow path communicating with the upper chamber and the lower chamber, and provided in the lower chamber to elastically support the piston, and the piston is lowered as the door is opened. An elastic member that provides a repulsive force that raises the piston when returning from the piston, and when the piston rod rises along the inner peripheral surface of the main body of the camshaft when the door returns, the piston rod rises In order to seal the lower chamber, speed adjusting means for adjusting the rising speed of the piston in multiple stages by adjusting the amount of oil flowing from the upper chamber to the lower chamber through the first flow path according to the height A versatile hinge device comprising a lower packing coupled to the lower portion of the housing.

  According to a second aspect of the present invention, the present invention comprises a tubular housing, a top seal packing having a through hole in the center and joined to the upper end to seal the top of the housing, and a cylindrical body First and second spiral elevating and lowering guide holes are provided in a movement-symmetric structure along the outer peripheral surface of the cylindrical body, and a shaft projects from the upper end of the cylindrical main body to the outside of the housing through the through hole of the upper packing. A camshaft that is rotated by an external force relative to the housing, and is fixed to the inner peripheral surface of the housing, and first and second vertical guide holes are formed in the vertical direction at opposite positions, and the camshaft cylinder A cylindrical guide tube in which the main body is rotatably inserted, and guide pins whose both ends are inserted into the first and second vertical guide holes through the first and second lifting guide holes, respectively. A center portion of the guide pin is provided at the upper end portion, and is slid along the first and second vertical guide holes by the rotation of the camshaft and along the inner peripheral surface of the cylindrical body of the camshaft. A piston rod which is vertically connected to the outer peripheral surface through a number of horizontal through holes which communicate with the outer peripheral surface at a right angle, and has an interconnected vertical recess formed in the lower portion, and the outer peripheral surface is the inner periphery of the housing The inner space of the housing is divided into an upper chamber and a lower chamber, and the lower end portion of the piston rod is coupled to a central through hole formed in the center portion. A piston having a first flow path communicating with the lower chamber through a horizontal through hole and a central through hole, and moving up and down in conjunction with the movement of the piston rod; At least one check valve that is opened when the piston is lowered, closed when the piston is raised, and selectively forms a second flow path communicating the upper chamber and the lower chamber; and the lower chamber so as to elastically support the piston An elastic member that provides a repulsive force that raises the piston when the piston lowers and returns as the door is opened, and a lower packing coupled to the lower portion of the housing to seal the lower chamber. The outlet diameter of the central through hole is smaller than the diameter of the check valve, so that when the door is returned, the check valve is closed and oil flows from the upper chamber to the lower chamber via the first flow path. Flow, the piston rises at a slow speed, and the many horizontal through holes of the piston rod Provided is a multi-purpose hinge device that forms a speed adjusting means for adjusting a rising speed of a piston when returning.

  According to a third aspect of the present invention, the present invention provides a housing having a circular inner peripheral surface, and an upper portion having a through hole in a central portion and coupled to an upper end portion for sealing the upper portion of the housing. A seal packing and first and second spiral elevating guide holes are provided in a movement-symmetric structure along the outer peripheral surface of the cylindrical main body, and from the upper end of the cylindrical main body through the through hole of the upper packing, The shaft protrudes to the outside and is fixed to the cam shaft that rotates by the external force relative to the housing when the door rotates, and the first and second vertical guide holes are formed in the vertical direction at the opposing positions. And a cylindrical guide tube into which the cylindrical main body of the camshaft is rotatably inserted, and both ends of the first and second vertical guide holes via the first and second lifting guide holes, respectively. Inserted in A guide pin, and a central portion of the guide pin penetrates the upper end portion, and the camshaft rotates to move up and down along the first and second vertical guide holes, and to the flow passage elongated hole opened downward, A piston rod formed with a reduction passage communicating with the outer peripheral surface, and provided in a passage long hole of the piston rod, has an inner cross-sectional diameter smaller than the passage long hole, and adjusts an oil flow amount inside. For this purpose, a flow path adjuster in which an orifice-shaped first speed control flow path having a gradually decreasing cross-sectional diameter is formed, and an outer peripheral surface is slidably inserted into the inner peripheral surface of the housing. A lower chamber of the piston rod is coupled to a central through hole formed in the central portion, and a piston that moves up and down in conjunction with the movement of the piston rod, At least one check valve that is opened when the piston is lowered, closed when the piston is raised, and selectively forms a second speed flow path that connects the upper chamber and the lower chamber; and a lower portion that elastically supports the piston An elastic member provided in the chamber, which is compressed when the piston descends as the door is opened and provides a restoring force to raise the piston when the door is returned; a housing lower seal packing coupled to the lower portion of the housing; and one end Is supported by the lower packing of the housing, and the other end is inserted into the first speed control flow path, and the cross-sectional area of the first speed control flow path through which oil flows is changed in multiple stages as the piston rod moves up and down. A hydraulic control rod having a multi-stage diameter at the other end, and the other end of the hydraulic control rod has a first diameter. The first diameter portion having a first diameter portion, a second diameter portion smaller than the first diameter, and an upper end portion having a spherical shape having the same diameter as the first diameter, and the automatic return speed of the door is changed to low speed, high speed and low speed. A hinge device is provided.

  The hinge device of the present invention as described above enables automatic door opening and closing by simultaneously adjusting the return speed and return force of the door by adjusting the amount of oil flow and the cam diagram angle of the lifting guide hole, There is an advantage that the door that is opened at a certain angle can be temporarily stopped by the cam diagram angle pattern.

  In addition, by setting the cam diagram angle of the lifting guide hole relatively larger than the door opening angle range of 15 to 90 ° in the door opening angle range of 0 to 15 °, Even if a compression spring is used without using a torsion spring, it is possible to completely return to the initial position of the door, and the cam diagram angle of the elevating guide hole is 15 to 15 in the door opening angle range of 0 to 15 °. By setting it relatively smaller than the 90 ° door opening angle range, the automatic return speed of the upper and lower doors can be slowed down.

  Further, according to the present invention, when the door automatically returns, the return speed is controlled in three stages according to the door opening angle by the cam diagram angle and the hydraulic circuit structure of the lifting guide hole for guiding the raising of the piston. The door is automatically closed while shifting at a high speed until the door approaches the initial position and then at a low speed after the door approaches.

  Further, according to the present invention, the cam diagram angle of the elevation guide hole for guiding the ascent of the piston is set to zero (0) when the door opening angle is in the range of 90 to 130 °, and the return spring is set. The door can be prevented from being automatically returned to the door, and the door can be kept open.

  The present invention has an overspeed prevention function capable of preventing an accident by blocking the return of the door due to a large external force such as strong wind, and the flow of oil that determines the return speed at the time of automatic return of the door The user can set the amount freely and easily from the outside of the device, and by adopting a bearing structure to minimize the friction between the fixed part and the rotating shaft and adopting a roller for the guide pin, Minimize noise generation and uneven wear.

  Furthermore, since the structure for controlling the return speed of the door and the return speed setting structure are simple and stable, the present invention has a structure that is highly reliable in operation and excellent in assembly productivity, relative to the overall length of the apparatus. By providing a longitudinal space for accommodating a large return spring and providing a large restoring force when the door automatically returns, the user can return the large door even with a small force.

  In addition, the present invention is such that the rotation axis of the hinge device matches the rotation axis of the door, such as a hinge device between a general left-right rotation type door and a door frame, or a vertical rotation type door hinge device applied to a Kimchi refrigerator or the like. It can be applied to any structure, whether or not.

  By embedding the hinge device of the present invention inside a vertically rotating door such as a refrigerator, the appearance of the refrigerator can be made beautiful, and the multi-stage adjustment of the closing speed and the angle setting of the open state are easy. Use of a refrigerator is convenient.

  Hereinafter, preferred embodiments of a multipurpose hinge apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a plan view of a multipurpose hinge apparatus according to a first embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the multipurpose hinge apparatus according to the first embodiment of the present invention taken along line AA of FIG. 3 is a perspective view of a vertical guide for vertically guiding a guide pin that moves up and down inside the multi-purpose hinge device of FIG. 2, and FIG. 4 is a vertical view of the piston rod in the multi-purpose hinge device of FIG. It is a perspective view which shows the cam shaft guided so that it may move.

  As shown in FIGS. 1-4, the multipurpose hinge apparatus 10 according to the first embodiment of the present invention includes a cylindrical housing 110 that houses internal components. A cylindrical upper packing 120 for sealing the upper end of the cylindrical housing 110 is coupled to the inner peripheral surface of the cylindrical housing 110, and grooves on the outer peripheral surface and the inner peripheral surface of the upper packing 120 are respectively provided in the grooves of the housing 110. O-rings 121 and 122 for sealing with respect to the inner peripheral surface and the outer peripheral surface of the camshaft described later are inserted.

  As shown in FIG. 3, after the upper end of a cylindrical guide tube 113 having a pair of vertical guide holes 113a and 113b formed in the vertical direction is coupled to the lower end of the upper packing 120, as shown in FIG. For example, the mutual joint is fixed by welding or the like.

  On the inner peripheral surface of the guide tube 113, as shown in FIG. 4, a camshaft 130 having a pair of spiral elevating guide holes 132 and 133 formed on the outer periphery of a cylindrical main body 130a in a 180 [deg.] Movement symmetrical structure is rotated. Built in possible. Further, the lower end of the shaft 130b is integrally connected to the inner periphery of the upper end of the cylindrical body 130a of the camshaft 130 by welding or the like, and the upper end of the shaft 130b passes through the center of the upper packing 120 to the outside of the housing 110. It protrudes through the hole.

  As will be described later, one end of the link is coupled to the shaft 130b of the camshaft 130 when the rotation axis of the door and the rotation axis of the door support frame are different depending on the application form of the hinge device (see FIG. 14), or when the rotation axis of the door and the rotation axis of the frame are the same, for example, in the case of a hinge type hinge device attached between the door of the rotation door and the door frame (see FIG. 10), fixed to the door support frame. In the case of a hinge device applied to a vertically rotating door such as a Kimchi refrigerator, the hinge knuckle can be connected to a shaft support embedded in the door. As a result, since the hinge device is embedded in the door in which the housing 110 rotates or is fixedly attached to the support frame, when the door rotates, the rotational force of the housing door is applied to the shaft 130b, so that the shaft Is rotated.

  Further, a repulsive force of a return spring 169 described later acts between the upper packing 120 and the cylindrical body 130a of the camshaft 130. Therefore, when the camshaft 130 rotates, the thrust is reduced in order to reduce rotational friction and noise. A bearing 125 is interposed.

  Furthermore, guide pins 140 that move up and down by the rotation of the camshaft 130 are inserted into the vertical guide holes 132 and 133 formed on the outer periphery of the cylindrical body 130 a of the camshaft 130 and the vertical guide holes 113 a and 113 b of the guide tube 113. Both end portions of the piston rod 150 are inserted, and the guide pin 140 is connected to the upper end portion of the piston rod 150 that moves up and down as the guide pin 140 moves up and down.

  In order to reduce friction and noise and prevent the occurrence of uneven wear when moving along the vertical guide holes 113a and 113b of the guide cylinders 113 at both ends of the guide pin 140, as shown in FIG. First and second roller bearings 141 and 142 are provided. Further, the guide pin 140 is fitted with the first washer 143 between the first roller bearing 141 and the piston rod 150, and the second washer 144 is fitted between the first and second roller bearings 141 and 142. The first and second roller bearings 141 and 142 are brought into close contact with each other in the longitudinal direction of the guide pin 140 without a gap.

  That is, the first roller bearing 141 is at the position of the guide pin 140 in contact with the elevation guide holes 132 and 133 of the camshaft 130, and the second roller bearing 142 is at the position of the guide pin 140 in contact with the vertical guide holes 113a and 113b of the guide tube 113. Is inserted into each.

  On the other hand, a piston 151 is coupled to the lower portion of the piston rod 150, and at the center of the piston 151, when the door is closed, that is, when the piston 151 is raised, the oil in the upper chamber 156 on the piston 151 is moved to the lower side of the piston. A central through hole 154 that forms a flow path that moves to the lower chamber 160 is formed, and left and right through holes 153c that form a flow path when the door is opened, that is, when the piston 151 descends, are formed on both sides of the central through hole. , 153d.

  At this time, if the piston 151 descends in the left and right through holes 153c and 153d as the door is opened, the built-in check balls 153e and 153f move upward to open the through holes 153c and 153d. 160 allows oil to easily move to the upper chamber 156, but when the piston 151 rises as the door is closed, the check balls 153e and 153f descend to close the through holes 153c and 153d, thereby closing the upper chamber. Unidirectional first and second check valves 153a and 153b are provided to prevent oil 156 from moving to the lower chamber 160.

  Further, the central through hole 154 has a stepped structure with a diameter decreasing in three stages, and female screw portions are formed on the inner peripheral surfaces 154a and 154b of the upper end and the lower end of the central through hole 154. The lower end of the piston rod 150 is screwed into the upper end inner peripheral surface 154a of the central through hole 154, and the second flow path 181 is formed in the lower end inner peripheral surface 154b with respect to the lower portion of the piston 151. The upper end of the control pipe 180 that moves in conjunction with the movement is screwed.

  A lower portion of the piston rod 150 extends from the outer peripheral surface of the upper portion of the coupling portion with the piston 151 to the center of the piston rod 150 and then bends downward from the center portion to penetrate therethrough. Is formed. The lower bent portion 150b forming the first flow path 150a has a relatively small inner diameter, and a concave portion 150c extended to the same inner diameter as the intermediate inner peripheral surface 154c of the central through hole 154 is formed at the lower portion thereof. It is formed.

  The piston rod extended recess 150c and the intermediate inner peripheral surface 154c of the central through hole 154 have a step structure, and the outer diameter of the lower end protruding from the central portion is smaller than the inner diameter of the control pipe 180, An overspeed prevention valve movable body 152a having a diameter larger than the inner diameter of the bent portion 150b and smaller than the inner diameter of the expansion recess 150c; a spring 152b that biases and supports the overspeed prevention valve movable body 152a upward; There is provided an overspeed prevention valve (OSV) 152 that is inserted into the intermediate inner peripheral surface 154c of the through-hole 154, and that includes an overspeed prevention bush 152e that works with the overspeed prevention valve movable body 152a to form a valve.

  The overspeed prevention valve movable body 152a is formed with a concave portion 152c having the same inner diameter as that of the upper bent portion 150b in the central portion, and the concave portion forms a flow path communicating to the outer peripheral surface of the valve movable body 152a. At least one through hole 152d is formed.

  As shown in FIGS. 11 and 12, the overspeed prevention valve 152 is pushed upward by the restoring force of the spring 152b when the door returns to the normal state. The upper end of the control pipe 180 forming the path 181 is opened so that oil can move from the upper chamber 156 to the lower chamber 160 via the first flow path 150a and the second flow path 181.

  However, as shown in FIG. 13, when a large force such as strong wind is applied to the door, an overspeed return prevention function is provided that prevents the door from closing at an overspeed and prevents an accident. That is, when the door rotates at an excessive speed due to a strong wind, the piston 151 rapidly rises to close the first and second check valves 153a and 153b, and the overspeed prevention valve movable body 152a applies the elastic force of the spring 152b. The lower surface of the overspeed prevention valve movable body 152a closes the through hole of the overspeed prevention bushing 152e to shut off the connection between the first flow path 150a and the second flow path 181. Become. Therefore, when the door tries to return at an excessive speed due to strong winds, it serves to suppress the piston 151 from rising. As a result, the occurrence of an accident can be prevented.

  In addition, an O-ring 155 is inserted into the groove portion on the outer peripheral surface of the circular piston 151 to prevent oil from leaking through the outer peripheral portion when moving along the inner wall of the housing 110.

  On the other hand, a cup-shaped head 182 is attached to the lower end portion of the control pipe 180 forming the second flow path 181 to seal the lower end portion, and first and second speeds formed in an inner pipe 170 and an outer pipe 175 described later. The rising speed of the piston 151 is controlled by opening or closing the second speed adjusting channel of the adjusting channel, and the second flow of the control tube 180 is directly above the lower end of the control tube 180 to which the head 182 is attached. A through hole 183 communicating with the path 181 is formed.

  Therefore, the head 182 attached to the lower part of the control pipe 180 is moved downward from the second flow path 181 on the lower side of the piston according to the ascending position of the piston 151, that is, the door opening angle, when the door is automatically returned. A pair of inner pipe 170 and outer pipe 175 are inserted so as to control the rising speed of the piston 151 (that is, the return speed of the door) by changing the amount of oil flowing into the chamber 160.

  The lower part of the outer tube 175 is screwed into the inner peripheral surface of the lower seal packing 191 for sealing the lower chamber 160, and a sealing O-ring 194 is inserted into the groove on the outer peripheral surface of the lower seal packing 191. It is worn. Inside the outer tube 175, an inner tube 170 is rotatably attached to each other, and the lower portion of the inner tube is screwed into the inner peripheral surface of the upper circular recess of the speed adjusting nut 192.

  In addition, since a return spring 169 that gives elastic force upward to the piston 151 is built in the space between the piston 151 and the lower seal packing 191, that is, the lower chamber 160, the piston is Play a role to raise.

  Meanwhile, the upper portion of the outer tube 175 is interposed between the inner peripheral surface of the outer tube 175 and the outer peripheral surface of the control tube 180 to block the upper ends of the outer tube 175 and the inner tube 170 from the lower chamber 160. A seal packing 161 is interposed. For sealing, O-rings 162 and 163 for sealing are respectively inserted into grooves on the outer peripheral surface and inner peripheral surface of the seal packing 161, and the lower portions thereof are screwed with the upper portion of the inner tube 170.

  In addition, an O-ring 195 for sealing the inner peripheral surface of the lower seal packing 191 is inserted into the groove portion on the outer peripheral surface of the speed adjusting nut 192, the lower side portion has a step structure, and the central portion thereof is It protrudes in a cylindrical shape. A cylindrical projecting portion of the speed adjusting nut 192 is inserted into the inner peripheral surface of the step portion of the speed adjusting nut 192 and the lower seal packing 191, and the outer peripheral surface is screwed with the lower end portion of the housing 110. Thus, a lower packing 190 that prevents the speed adjusting nut 192 and the lower seal packing 191 from being detached is provided.

  On the other hand, the cylindrical protrusion of the speed adjusting nut 192 is formed with a through-hole for discharging all air in the oil after assembling all the parts inside the housing 110 and filling with oil. An air discharge bolt 197 is screwed through a sealing O-ring 198.

  A speed adjusting handle 193 for rotating the speed adjusting nut 192 at the lower portion of the housing 110 is provided on the cylindrical protrusion of the speed adjusting nut 192 to adjust the return speed of the door according to the user's needs. It is fixed by.

  The door return speed control structure employed in the first embodiment of the present invention will be described below.

  As shown in FIGS. 7A and 7B, the inner tube 170 is formed with a pair of first and second eccentric grooves 171 and 172 at a predetermined interval on the upper side. The pair of first and second eccentric grooves 171 and 172 are gradually formed deeper from one outer peripheral point to the opposite outer peripheral point. Then, through holes 173a and 173b communicating with the inside are formed at the deepest points of the first and second eccentric grooves 171 and 172. In addition, a single long hole 174 is formed in the lower portion of the inner tube 170.

  Further, as shown in FIG. 8, the outer tube 175 has through holes 176 and 177 formed at the same level as the first and second eccentric grooves 171 and 172 of the inner tube, respectively, A through hole 178 is formed at the same level corresponding to the long hole 174 of the inner tube 170.

  Therefore, depending on which part of the first and second eccentric grooves 171 and 172 of the inner pipe 170 the through holes 176 and 177 of the outer pipe 175 are located opposite to each other, the sectional area of the eccentric groove through which oil can pass is determined. change. Therefore, when the user rotates the speed adjusting handle 193, the speed adjusting nut 192 and the inner pipe 170 rotate together, so that the eccentric grooves 171 and 172 of the inner pipe facing the through holes 176 and 177 of the outer pipe are disconnected. As the area changes, the amount of oil flowing from the second flow path 181 to the lower chamber 160 changes. As a result, by rotating the speed adjustment handle 193 left and right under the same conditions, the amount of oil flow changes, and the rising speed of the piston 151, that is, the return speed of the door is adjusted.

  In the following description, for convenience, the flow path connecting the through hole 173a of the inner tube 170, the first eccentric groove 171 and the through hole 176 of the outer tube 175 is referred to as a first speed adjustment flow channel 179a. A flow path connecting the through hole 173b, the second eccentric groove 172, and the through hole 177 of the outer tube 175 is referred to as a second speed adjusting flow path 179b. A flow path connecting the long hole 174 of the inner pipe 170 and the through hole 178 of the outer pipe 175 is referred to as a third flow path 179c.

  Hereinafter, the piston raising / lowering guide structure according to the first embodiment of the present invention will be described in detail with reference to FIGS. 4 and 5.

  4 is a perspective view showing a camshaft for guiding the piston rod of the multipurpose hinge device shown in FIG. 2 to move up and down, and FIG. 5 shows the operation of the multipurpose hinge device by the elevating guide hole of the camshaft shown in FIG. It is a figure which shows the position of the guide pin by and the compression state of a return spring.

  As shown in FIG. 5, each of the elevating guide holes 132 and 133 of the camshaft 130 has four sections (ad) related to the door opening angle, that is, the first section (a ), A second section (b) having a door opening angle of 15 to 90 °, a third section (c) having a door opening angle of 90 to 130 °, and a fourth section having a door opening angle of 130 to 160 ° ( d).

  The first section (a) is a low speed return section at the time of automatic return of the door, and is a hydraulic circuit state shown in FIG. 12 (that is, one of two flow paths formed in the inner pipe 170 and the outer pipe 175). When only one side is open) the oil will flow and the door will close at low speed. In this case, the loss of the closing force due to the reduction of the proportional restoring force of the hydraulic circuit resistance at the low speed and the return spring 169 causes the cam diagram angle (α) of the lifting guide holes 132 and 133 to be in the second section (b). This is complemented by increasing the efficiency at the time of ascending by setting the range of 45 to 65 °, which is relatively larger than the angle (β). As a result, when the door is automatically returned, even if a compression spring is used instead of a torsion spring as the return spring, the door can be completely returned (locked) to the initial position.

  The second section (b) is a high-speed return section when the door automatically returns, and the hydraulic circuit state shown in FIG. 11 (that is, the two flow paths formed in the inner pipe 170 and the outer pipe 175 are both opened). The oil will flow and the door will close at high speed. On the other hand, when the door is opened, the restoring force of the return spring 169 increases in proportion to the opening angle, so that the force required for the user to open the door also increases in proportion to the opening angle. Therefore, in the second section (b), the cam diagram angle (β) of the lifting guide holes 132 and 133 is set to a range of 10 to 45 ° which is relatively smaller than the angle (α) of the first section (a). Thus, when the door is opened, the rotational efficiency of the camshaft 130 is proportionally increased to compensate for the increase in the opening force that increases in proportion to the opening of the door.

  The third section (c) is a section in which the angle of the cam diagram is set to zero and automatic return by the return spring 169 is blocked, and the angle in the state where the door is opened is maintained, and the return spring 169 is maintained. Restoring power is maximized. The fourth section (d) is a stop force strengthening section that is formed obliquely upward from the third section (c) and prevents the guide pin 140 from moving any further due to the locking. In this case, the fourth section (d) may be formed to extend so that the door opening angle is 130 to 180 °.

  On the other hand, the elevating guide holes 132 and 133 can be formed with an inclination of 30 to 45 ° in the cam diagram in the first section (a). As described above, when the inclination of the first section (a) is formed to be 30 to 45 °, since the lifting distance of the piston 151 connected to the guide pin 140 is short, compared to the external force that rotates the camshaft 130, The efficiency of the return spring 169 that is compressed is reduced. Therefore, when the inclination of the first section (a) is 30 to 45 °, the door that is opened and closed vertically can be closed gradually while absorbing the impact force by the external force such as inertial force. .

  Further, as described above, when the inclination of the first section (a) is 45 to 65 °, the lifting distance of the piston 151 becomes long, so that the return spring is compressed by the external force that rotates the camshaft 130. The repulsive force of 169 increases. Therefore, when the inclination of the first section (a) is 45 to 65 °, the efficiency of the return spring 169 increases, so that the door that is opened and closed to the left and right can be more easily and quickly closed to the complete return position.

  The elevating guide holes 132 and 133 are preferably formed to have a certain width so that the first roller bearing 141 coupled to the guide pin 140 is in close contact therewith.

  As described above, when the cam diagram angle is set in the lifting guide holes 132 and 133, the guide pin 140 is lifted and lowered by the lifting guide holes 132 and 133 inclined in the first section (a) and the second section (b). It descends along the part 132a, and stops in the third section (c) without moving up and down. When the rotation of the camshaft 130 continues, the guide pin 140 advances to the fourth section (d) slightly inclined upward in the third section (c), and the guide pin 140 is applied to the first stop portion 132b and rotates. Can't stop.

  And as for the raising / lowering guide holes 132 and 133, in the 4th area (d), the 2nd stop part 132c and the 3rd cam diagram maintenance part 132f are formed in the inclination of 15-60 degrees. When the inclination of the fourth section (d) is less than 15 °, the camshaft 130 is easily rotated by the repulsive force or fine external force of the return spring 169, so that the force for stopping the guide pin 140 is weak and is not appropriate. . Further, when the inclination of the fourth section (d) exceeds 60 °, the force to stop the guide pin 140 is increased by the locking by the first stop portion 132b, but from the fourth section (d) to the third section When entering (c), that is, when the guide pin 140 is raised, a large external force is required, which is not appropriate.

  On the other hand, when the guide pin 140 rises due to the repulsive force of the compressed return spring 169, the upper hydraulic pressure of the piston 151 acts more than the elastic force of the return spring 169 near the rise limit point of the piston 151. 151 can also fall rapidly in the reverse direction. Accordingly, the first cam diagram maintaining portion 132d is in close contact with the first roller bearing 141 coupled to the guide pin 140 in the lifting guide holes 132 and 133 so that the guide pin 140 does not deviate from the lifting diagram. It is necessary.

  The guide pin 140 may cause internal noise and damage to internal components due to irregular movement at an early stage of entering the second section (b) from the third section (c). In order to prevent this, it is preferable that the boundary between the first cam diagram maintaining part 132d and the second cam diagram maintaining part 132e of the lifting guide holes 132, 133 is formed in a curved surface.

  Hereinafter, the overall operation of the multipurpose hinge apparatus according to the first embodiment of the present invention will be described with reference to FIGS.

  9 is a cross-sectional view of the piston and the return speed adjusting unit showing the initial position where the piston is located at the top dead center, FIG. 10 is a cross-sectional view showing the flow of pressure oil when the piston is lowered by opening the door, and FIG. FIG. 12 is a cross-sectional view showing the flow of pressure oil when the piston rises at the first speed until the door opening angle reaches 30 ° due to the closing of the door, FIG. 12 shows the door opening angle reaching 0 ° due to the door closing. It is sectional drawing which shows a pressure oil flow when a piston raises at 2nd speed until.

  First, the hinge device 10 according to the first embodiment of the present invention can be used for many purposes, which will be described in detail later. In the following description, the housing 110 is attached to a door or frame, or attached to a main body such as a refrigerator or furniture in which a hinge device is installed, and a rotational force is applied to the shaft 130b of the camshaft 130 by the rotation of the door. This structure will be described as an example.

  In the multipurpose hinge device of the first embodiment of the present invention, when the door is opened, the hydraulic circuit is set as shown in FIGS.

  That is, in the multipurpose hinge device 10 according to the first embodiment of the present invention, when the door is opened, the external rotational force is transmitted to the shaft 130b of the camshaft 130, so that the internal components are as follows. Operates on.

  In the initial state of FIG. 9 in which the door is closed, when the user opens the door, a clockwise rotational force is transmitted to the camshaft 130, so that a pair of the lifting guide holes 132 and 133 and the cylindrical guide tube 113 are paired. The guide pins 140 having both ends inserted into the vertical guide holes 113a and 113b move downward along the lift guide holes 132 and 133 by the rotation of the camshaft.

  In this case, as shown in FIG. 10, a force to move downward acts on the piston 151 interlocked with the guide pin 140 and the piston rod 150, and the oil located in the lower chamber 160 below the piston 151 is When the first and second check valves 153a and 153b are opened, the piston easily moves to the upper side of the piston, that is, the upper chamber 156 through the check valve. It flows out into the lower chamber 160 through a third flow path 179c provided below 170 and the outer tube 175.

  Then, the guide pin 140 moves in the first section (a) and the second section (b) as in the operation in the elevation guide holes 132 and 133 shown in FIG. 5, and the piston rod 150 and the piston 151 return. The spring 169 is lowered while being compressed.

  When the camshaft 130 continues to rotate, the guide pin 140 reaches the third section (c), and its movement is restricted by the first stop portion 232b of the third section (c) of the lifting guide holes 132 and 133. The piston 151 is maintained in a stopped state.

  On the other hand, when the door is closed, the hinge device according to the first embodiment of the present invention has a door opening angle of 90 ° after the user closes the door or opens the door within 90 °. When released within, the door will automatically return. At this time, two types of hydraulic circuits are set according to the opening angle of the door, as shown in FIGS.

  First, when the door opening angle reaches 90 ° to 30 °, the piston 151 is quickly raised at the first speed by setting the hydraulic circuit as shown in FIG. That is, when the opening angle of the door is 90 °, that is, when the door is stopped, when the user rotates the door and applies a slight external force to the camshaft 130 in the counterclockwise direction, the guide pin 140 is The vehicle passes through the stop portion 132b and departs from the third section (c).

  Then, the piston 151 starts to move upward due to the repulsive force of the compressed return spring 169, and the guide pin 140 connected to the piston 151 is also in the second section (b) of the elevating guide holes 132 and 133, that is, 10 to 10. It rises along the raising / lowering guide part 132a with a gentle inclination angle of 45 °. As a result, the camshaft 130 rotates counterclockwise and tries to return the door to the initial position.

  At this time, as shown in FIG. 11, the oil in the upper chamber of the piston 151, that is, the upper chamber is blocked by the check balls 153e and 153f of the check valves 153a and 153b, so that the through holes 153c and 153d are blocked. The first flow path 150a provided in the piston rod 150, the overspeed prevention valve 152, the second flow path 181 inside the control pipe 180, and the first and second speed adjustment flow paths 179a, 179b is sequentially passed to the lower chamber 160 below the piston 151.

  Thus, when the piston 151 rises until the door opening angle reaches 90 ° to 30 °, the second speed adjustment flow path 179b is not blocked by the head 182 of the control pipe 180. Since the upper oil flows into the lower chamber 160 through the first and second speed control channels 179a and 179b, the piston can be quickly raised at the first speed.

  In this case, as the piston 151 rises, the oil in the lower chamber 160 begins to enter the inner tube 170 via the third flow path 170c provided below the inner tube 170 and the outer tube 175.

  Thereafter, when the opening angle of the door reaches 30 °, a pressure circuit as shown in FIG. 12 is set, and the second speed adjusting flow path 179b is blocked by the head 80 between the controls. The upper oil flows into the lower chamber 160 only through the first speed control channel 179a. Accordingly, the amount of oil flow decreases to ½, and the piston rises at a second speed that is slower than the first speed.

  Also in this case, the guide pin 140 connected to the piston 151 ascends along the second section (b) of the elevation guide holes 132 and 133, that is, the elevation guide portion 132a having a gentle angle.

  The lift of the piston 151 at such a slow second speed is maintained until the door opening angle reaches 15 °, so that it is possible to prevent a user accident and inconvenience due to a rapid door return.

  After that, as shown in FIG. 5, when the opening angle reaches 15 °, the guide pin 140 connected to the piston 151 moves to the first section (a) of the lifting guide holes 132 and 133, that is, suddenly 45 to 65 °. Ascends along the elevating guide 132a set at a certain inclination angle.

  Therefore, when the door opening angle is 15 to 0 °, the hydraulic circuit is set in the same manner as in the case where the door opening angle is 30 to 15 °, but the inclination angle of the lifting guide portion 132a is the second section (b). Is set to be relatively larger than the inclination angle. As a result, the restoring force of the return spring 169 is reduced, but the frictional resistance of the elevating guide 132a is reduced, so that the rising speed of the piston 151 is accelerated to the third speed. Accordingly, the door returns to the initial position and is locked by the door latch.

  As described above, according to the first embodiment of the present invention, even if a compression spring is used as a return spring by appropriately setting the cam diagram angle with respect to the elevation guide portion 132a of the elevation guide holes 132 and 133, the door When the door is close to the initial position at the time of automatic return, it is possible to solve the problem that the restoring force of the spring is reduced and the door is not closed at all.

  As described above, the hinge device according to the first embodiment of the present invention has a frictional resistance obtained by changing the restoring force of the return spring, the flow path control of the hydraulic circuit, and the cam diagram angle of the lifting guide hole when the door is automatically returned. It is possible to control the automatic return speed and return force of the door by the change of.

  Further, when the door rotates at an excessive speed due to strong wind, the piston 151 rises rapidly, and the first and second check valves 153a and 153b are closed and the overspeed preventing valve movable body 152a is closed as shown in FIG. Falls while overcoming the elastic force of the spring 152b, and closes the through hole of the overspeed prevention bush 152e. Therefore, when the door returns at an excessive speed due to a strong wind, the excessive speed prevention valve 152 plays a role of suppressing the rise of the piston 151.

  The multipurpose hinge device of the first embodiment of the present invention can be applied to various uses as follows.

  First, a case where it is not preferable to install the door with the center of rotation of the hinge device, such as a refrigerator or a large door, will be described with reference to FIGS. 14 and 15 to 18. FIG. 14 is an exploded perspective view showing an installation structure when the multipurpose hinge device of the first embodiment of the present invention is applied to the lower part of the refrigerator, and FIGS. 15 to 18 are explanatory views of the hinge device by the door opening angle.

  As shown in FIGS. 1 and 2, a plurality of fixing bolts 111 are fastened to the upper packing 120, thereby fixing a rectangular flange 112 to the upper portion of the housing 110. In this way, it is embedded and fixed in the lower end groove of the door 100. In this case, it is possible to install at the upper end of the door when the aesthetic is not taken into consideration or the gate is large.

  Here, the contact portion between the flange 112 and the housing 110 can be welded to increase the coupling strength, and the protruding shaft 130b of the camshaft 130 may be formed in a polygonal shape such as a hexagonal end. When coupled with other members, the coupling is easy and a large force can be transmitted.

  The hinge device according to the first embodiment of the present invention can be installed on a left-right rotating door such as a refrigerator using the two-bar link 103 and the support bracket 105. The camshaft 130 is fixedly coupled to the hinge shaft 101 provided at the lower end of the refrigerator main body 102 at the other end of a two-bar link 103 having one end pivotably connected thereto. Is rotatably supported at a tip end portion extended from a support bracket 105 fixed to the upper end of the main body 102. The two-node link 103 includes a driven link 103a and a drive link 103b.

  In this case, since a rotational force is applied to the shaft 130b via the two-bar link 103 on the upper packing 120, it is preferable to provide a radial bearing 114 around the shaft 130b in order to prevent uneven wear.

  When the user opens the door 100, as shown in FIG. 10, the first and second check valves 153a and 153b are opened, so that the door can be easily centered on the rotating shaft 104 provided on the support bracket 105. When opening and closing the door, as shown in FIGS. 11 and 12, the return speed of the door 100 is adjusted by changing the oil flow rate by opening and closing the second speed adjusting flow path 179b.

  However, in this case, there is a difference between the door opening angle (θ) and the door opening angle (that is, the rotation angle of the shaft 130b) described in the hinge device of FIG. For example, when the door opening angle (θ) is about 90 ° as shown in FIG. 17, the shaft of the hinge device is rotated by about 140 °, and when it is about 105 ° as shown in FIG. 130b is rotated by about 180 °.

  In the case of a refrigerator door, when the user opens the refrigerator, in order to minimize the leakage of cold air from the refrigerator, the user generally opens the door in a range of 30 to 50 ° and opens the food or drink container inside the refrigerator. Most often occurs when taking out.

  Therefore, when the door is opened within the normal use range as described above, the rotation angle of the shaft 130b of the hinge device is within the range of 90 °, and thus the door is automatically restored. On the other hand, when taking out or putting in more food or drink, the door is opened at 60 ° or more for convenience of work. In this case, since the shaft 130b of the hinge device according to the first embodiment of the present invention is rotated by 90 ° or more, the door 100 of the refrigerator is maintained in an open state by the user.

  Therefore, when the door opening angle is within 60 °, the door automatically closes at the high speed and low speed of the first speed, the second speed, and the third speed. When removing the door, the door closes with minimal loss of cold air.

  Thus, when it is not appropriate to match the rotation center of the door and the rotation center of the hinge device, the hinge with respect to the rotation of the door can be achieved by changing the lever ratio and the rotation center of the driven link 103a of the two-link 103 and the drive link 103b. The amount of rotation and the closing force of the device can be effectively changed.

  On the other hand, the hinge device of the first embodiment of the present invention can be used by attaching the multipurpose hinge device as a hinge type between the door and the door frame when the rotation center of the hinge device and the rotation center of the door coincide. .

  In this case, in the embodiment of FIG. 2, instead of connecting the flange 112, the movable hinge plate 302 is fixed to the door and the fixed hinge plate 304 is fixed to the door frame as shown in FIG. A thrust bearing 305 is interposed between the upper hinge knuckle 301 fixed to one side of the plate 302 and the lower hinge knuckle 303 fixed to one side of the fixed side hinge plate 304 to reduce friction due to rotation. The

  And the hinge apparatus 10 of the said embodiment is inserted and installed in the inside of the upper-and-lower hinge knuckle 301,303. The stop angle connecting plate 314 is engaged with the protruding shaft 130 b of the camshaft 130 protruding above the upper packing 120, and the stop angle connecting plate 314 is fixed to the upper hinge knuckle 301 by the stop angle adjusting bolt 306. As a result, the camshaft 130 rotates as the door is opened.

  In this case, the multipurpose hinge device according to the first embodiment of the present invention rotates the stop angle connecting plate 314 engaged with the camshaft 130 by a predetermined amount in advance, and then fixes it with the stop angle adjusting bolt 306. By adjusting the angle range in which the camshaft 130 rotates, the opening / closing rotation range of the door and the angle at which the camshaft 130 is stopped can be adjusted.

  Further, the hinge device according to the first embodiment of the present invention embeds the hinge device in the door and connects the hinge pin for connection to the shaft 130b of the hinge device even when the hinge device is opened and closed vertically like a door of a Kimchi refrigerator. After that, the hinge pin is fixed to the support part of the refrigerator main body by a method such as spline coupling, or instead of the connecting hinge pin, the hinge device shaft 130b is extended and directly fixed to the main body for use. You can also.

  In this way, when the door is opened and closed in the vertical direction, when the door is closed, the cam diagram angle with respect to the first section (a) of the lifting guide holes 132 and 133 is considered in consideration of an increase in restoring force due to the weight of the door. α) is preferably set to be relatively smaller than or equal to the angle (β) of the second section (b). Therefore, when the door returns to the initial position, if the return speed of the door is fast, it is possible to prevent damage to the electronic control unit mounted on the main body.

  The present invention is not limited to the embodiment described above, and various modifications are possible as described below.

  For example, the camshaft may have first and second elevating guide holes formed in a spiral shape as shown in FIG. 4 in the opposite direction to the illustrated embodiment. Also in this case, the guide pin is guided up and down by the rotation of the camshaft.

  In the above-described embodiment, only the second speed adjustment flow path 179b is opened and closed by raising and lowering the control pipe 180, but the third speed adjustment flow path 179b of the inner pipe 170 and the outer pipe 175 is provided below the second speed adjustment flow path 179b. When the speed adjusting flow path is provided, the rising speed of the piston 151 can be further subdivided and controlled in accordance with the elevation of the control pipe 180.

  Furthermore, in the above-described embodiment, the return speed of the door is adjusted by subdividing the ascending speed of the piston by controlling the oil flow rate by opening and closing the second speed adjusting flow path 179b by raising and lowering the control pipe 180. However, when it is applied to a hinge device for connecting a vertical door such as a Kimchi refrigerator to the main body, that is, when control of the return speed by the user is unnecessary, the control of the oil flow amount is simplified. can do.

  That is, in the first embodiment shown in FIG. 2, the control pipe 180 necessary for the multistage speed adjustment, the inner pipe 170 and the outer pipe 175 connected to the control pipe 180, the speed adjustment handle 193, and the like are removed, and the second pipe shown in FIG. It can also be configured as in the embodiment.

  In this case, when the overspeed prevention valve arranged in the central through hole 154 of the piston 151 is used as it is, there is no need to separately change the outlet diameter of the central through hole 154, but the overspeed prevention valve is removed. Therefore, it is necessary to form the outlet diameter of the first flow path 150a communicating with the upper chamber 156 and the lower chamber 160 relatively smaller than the diameter of the check valves 153a and 153b.

  In such a dedicated hinge device for the vertical opening / closing door, when the return speed of the door is to be controlled in multiple stages, as shown in FIG. 20, the upper chamber 156 and the lower chamber 160 at the lower part of the piston rod 149 communicate with each other. By changing the structure of the first flow path 150a to form at least one horizontal through hole formed at a right angle to the outer peripheral surface of the piston rod 149 above the first flow path 150a, the first flow path 150a A speed control channel 149a that is connected to 150a may be further formed.

  The position of the speed adjusting channel 149a is set according to the interval between the first and second speed adjusting channels 179a and 179b of the first embodiment, and the cam is opened when the door opening angle reaches 30 °. The position is preferably set at a position closed by the inner peripheral surface of the shaft 130. In this case, the speed can be finely controlled by adding another flow path having the same function as the speed control flow path 149a.

  In such a second embodiment, it is necessary that the inner peripheral surface of the camshaft 130 and the outer peripheral surface of the piston rod 149 come into slidable contact.

  In the second embodiment, when the piston rod 149 rises along the inner peripheral surface of the camshaft 130 in conjunction with the rise of the piston 151 when the door is returned, the height of the piston rod 149 raised or lowered, that is, The speed adjustment flow path 149a is closed by the opening angle, and the amount of oil flowing from the upper chamber 156 to the lower chamber 160 through the first flow path 150a and the overspeed prevention valve 152 is adjusted. Is adjusted in multiple stages, similar to the first embodiment.

  In such a vertical opening / closing hinge device, when the door returns downward due to its own weight, the closing speed must be reduced, so that the oil flows from the upper chamber 156 to the lower chamber 160 via the first flow path 150a. Sometimes, the oil flow rate must be controlled so that the piston 151 rises at a slow speed. For this reason, it is necessary to appropriately set the dead weight of the door, the restoring force of the return spring 169, the position of the speed adjustment channel 149a, the outlet diameter of the first channel 150a, and the cam diagram angles of the lifting guide holes 132 and 133. It is.

  The second embodiment can be applied to a left / right opening / closing door in addition to a vertical opening / closing door, and does not have a speed adjustment function by a user, but the structure is simplified compared to the first embodiment. Therefore, it is light and improved in assemblability, and it is possible to obtain a minimum slim type hinge device having a diameter × length (24 × 153 mm) with an effect of reducing the cost of the product by reducing the cost of parts.

  In addition to the above application, the first and second embodiments are applied to a structure in which a hinge shaft protrudes from a door frame, and the housing of the hinge device is attached to a door-side pivot hinge. The shaft can be non-rotatably coupled to the door frame side hinge.

  Furthermore, the speed adjusting mechanism of the second embodiment can be used in combination with the first embodiment. That is, in the first embodiment, as in the second embodiment, the first flow path 150a is formed by forming at least one horizontal through hole formed at right angles to the upper outer peripheral surface of the first flow path 150a of the piston rod. By further providing a speed adjusting flow path 149a that is connected to the inside, it is possible to provide another speed adjusting means in the first embodiment. In this case, the speed can be adjusted more finely than in the first and second embodiments.

  On the other hand, FIG. 21 is an exploded perspective view of the multipurpose hinge device according to the third embodiment of the present invention, FIG. 22 is a longitudinal sectional view of the assembled multipurpose hinge device of the third embodiment, and FIG. 23 is the camshaft of FIG. FIG. 3 is an exploded perspective view showing a coupling relationship between a piston rod and a camshaft guide portion.

  As shown in FIGS. 21 to 23, a multi-purpose hinge device according to a third embodiment of the present invention includes a housing 210 that houses internal components, and a cam that partially protrudes from the top of the housing 210 and rotates by an external force. A shaft 230, a guide pin 240 that moves along a groove 213 formed on the inner surface of the housing 210 and a lift guide hole 232 formed on the outer peripheral surface of the camshaft 230, and the guide pin 240 are connected to A piston rod 250 that moves to the bottom, a piston 260 that is connected to a lower portion of the piston rod 150 and has an oil passage formed therein, a return spring 270 that biases upward from the lower portion of the piston 260, and the piston The end of the piston 260 is inserted into a flow path formed at the center of the cross section of the piston 260 to move the piston 260 up and down. Ri and a hydraulic control rod 280 to vary the oil flow amount.

  The housing 210 is a cylindrical body having a certain length, and a through hole is formed in the center in the longitudinal direction. The inner surface of the housing 210 is formed differently depending on its vertical position, but the upper inner surface 211 has the same inner peripheral shape as the upper packing 220 so that the upper packing 220 is inserted. A cam shaft guide portion 212 having an outer shape smaller than that of the upper inner surface 21 is formed on the lower side of the upper inner surface 211 inside the housing 210, and the cam shaft guide portion 212 has a pair of grooves 213 that face each other vertically. Formed in the direction. The camshaft 230 is positioned in the camshaft guide portion 212 in a state where the hinge device according to the third embodiment of the present invention is assembled, and a guide pin that protrudes outside the camshaft 230 is formed in the pair of grooves 213. 240 is inserted. In addition, a lower inner surface 214 in which the piston 260 and the return spring 270 are located is formed on the inner surface of the housing 210 below the camshaft guide portion 212 (see FIGS. 21 and 23).

  An upper packing 220 is inserted into the upper inner surface 211 of the housing 210, and a thrust bearing 221 for canceling surface friction due to rotation of the camshaft 230 is provided at the lower portion of the upper packing 220. An upper packing hole is formed at the center of the cross section of the upper packing 220 so that the shaft 231 of the camshaft 230 penetrates, and the shaft 231 protrudes outside the upper packing 220 through the upper packing hole.

  Since the end of the shaft 231 of the camshaft 230 is formed in a polygonal cross section, when a movable body such as a door is connected to the shaft 231, the rotational force from the outside is efficiently transmitted. The camshaft 230 is formed with a cylindrical body 233 having a cross-sectional diameter larger than that of the shaft 231, and a hole is formed in the longitudinal direction so that the piston rod 250 is inserted into the cylindrical body 233. Is formed. A pair of elevation guide holes 232 facing each other are formed on the outer peripheral surface of the cylindrical main body 233 (see FIGS. 24A and 24B).

  FIG. 24A is a perspective view showing a camshaft that guides the piston rod so as to move up and down in the multi-purpose hinge device shown in FIG. 23, and FIG. 24B is a view of the camshaft shown in FIG. FIG. 25 and FIG. 26 show the position of the guide pin by the operation of the multipurpose hinge device in the lifting guide hole, and FIGS. 25 and 26 show the internal operation state generated by the action of the relative rotational force of the multipurpose hinge device of the third embodiment. FIG. 27, FIG. 28 and FIG. 29 are sectional views showing a part of the internal operation state generated by the action of the relative rotational restoring force of the multipurpose hinge device of the third embodiment.

  As shown in FIGS. 24A to 29, the elevation guide hole 232 is formed in the counterclockwise direction along the outer peripheral surface of the camshaft 230, and in the planar shape, the elevation section (a ) And a first stop section (b) formed at the same level from the lower end of the lift section (a) and the first stop so that the guide pin 240 moved along the lift section (a) cannot be lifted or lowered The second stop section (c) is formed obliquely upward by a short distance from the section (b) and stops without being able to move any further due to the locking of the guide pin 240. The elevating guide hole 232 is formed to have a certain width so that the first roller bearing 241 fitted to the guide pin 240 is in close contact therewith.

  Moreover, the raising / lowering guide hole 232 is formed in the raising / lowering area (a) so that the raising / lowering part 232a and the 1st cam diagram maintenance part 232d have the same inclination of 30-60 degrees. In the case where the inclination of the elevating section (a) is formed at 30 to 45 °, in the case of the camshaft 230 having a limited length, the elevating distance of the piston 260 connected to the guide pin 240 is short. Compared with the external force that rotates 230, the efficiency of the return spring 270 is reduced. Therefore, when the inclination of the elevating section (a) is 30 to 45 °, the door that is opened and closed up and down is gradually closed while absorbing the impact force by closing the door that is closed by an external force such as an inertial force such as its own weight. To close. Further, when the inclination of the elevating section (a) is formed at 45 to 60 °, the elevating distance of the piston 260 becomes longer, so that the repulsive force of the compressed return spring 270 is generated by the external force that rotates the camshaft 230. growing. Therefore, when the inclination of the elevating section (a) is 45 to 60 °, the door that is opened and closed to the left and right can be more easily and quickly closed.

  The guide pin 240 descends along the up-and-down section (a) inclined up and down, and temporarily stops without moving up and down in the first stop section (b). When the camshaft 230 continues to rotate, the guide pin 240 advances from the first stop section (b) to the second stop section (c) slightly inclined upward, and the guide pin 240 is bent to the first stop section. Since it is locked to 232b, it stops without being rotated.

  In the second stop section (c), the elevation guide hole 232 is formed such that the second stop portion 232c and the third cam diagram maintaining portion 232f have the same inclination of 15 to 60 °. When the inclination of the second stop section (c) is less than 15 °, the camshaft 230 is easily rotated even by the repulsive force of the return spring 270 or a fine external force, so that the force for stopping the guide pin 240 is weakened. Therefore, it is not appropriate.

  On the other hand, when the guide pin 240 rises due to the repulsive force of the compressed return spring 270, the upper hydraulic pressure of the piston 260 acts larger than the elastic force of the return spring 270 near the rise limit point. 260 may drop rapidly in the reverse direction. Therefore, the first cam diagram maintaining part 232d is in close contact with the first roller bearing 241 coupled to the guide pin 240 in the lifting guide hole 232 so that the guide pin 240 does not deviate from the lifting diagram. is necessary.

  The guide pin 240 may cause internal noise and damage to internal components due to irregular motion at an early stage of entering the lifting section (a) from the first stop section (b). In order to prevent this, a boundary portion between the first and second cam diagram maintaining portions 232d and 232e is formed in a curved surface in the elevation guide hole 232.

  As described above, the guide pins 240 are inserted into the pair of lifting guide holes 232, and the guide pins 240 move along the path formed by the pair of lifting guide holes 232. In addition, the guide pin 240 is located in a pair of grooves 213 of the housing 210 and protrudes along the grooves, the portion protruding from the outer surface of the camshaft 230.

  In addition, the guide pin 240 is provided with first and second roller bearings 241 and 242 in order to reduce friction with the elevation guide hole 232 and the groove 213, respectively. That is, the first roller bearing 241 is fitted to the position of the guide pin 240 that contacts the elevation guide hole 232 of the camshaft 230, and the second roller bearing 242 is fitted to the position of the guide pin 240 that contacts the groove 213 of the housing 210. Since the first washer 243 is fitted between the first roller bearing 241 and the piston rod 250 and the second washer 244 is fitted between the first and second roller bearings 241 and 242 on the guide pin 240. The first and second roller bearings 241 and 242 are in close contact with each other in the longitudinal direction of the guide pin 140 without a gap.

  A piston rod 250 connected to the guide pin 240 is connected to the camshaft 230. The piston rod 250 has a cylindrical shape, and a guide pin 240 is coupled to an upper portion thereof, and a piston 260 is integrally coupled to a lower portion thereof. The piston rod 250 is formed with a channel long hole in the longitudinal direction at the center of the cross section, and a spring 252 is provided in the channel long hole. A flow path adjustment tool 254 having a smaller cross-sectional diameter than the flow path long hole is provided in the flow path long hole of the piston rod 250. The flow path adjuster 254 is formed with an orifice-shaped first speed control flow path 254a having a cross-sectional diameter that gradually decreases so as to adjust the amount of oil flow inside. As a result, when the hydraulic control rod 280 is positioned in the first speed adjustment channel 254a, the sectional area in which oil can flow is changed by the vertical movement of the piston rod 250, and the amount of oil flow is adjusted. The piston rod 250 is formed on the upper side slightly higher than the piston 260 so that a reduction flow path 253 connects the inside and outside of the piston rod 250.

  The piston 260 is integrally connected to the piston rod 250 and moves up and down on the lower inner surface 214 of the housing 210 by hydraulic pressure or elastic force. At this time, the upper end of the piston 260 is in contact with the camshaft guide portion 212, so that the upward movement is restricted. In addition, since the oil ring 264 is inserted into the outer peripheral surface of the piston 260, the piston 260 comes into close contact with the lower inner surface 214, thereby preventing oil from leaking through the gap between the piston 260 and the lower inner surface 214. Is done.

  The piston 260 includes a second speed-regulating flow that penetrates the piston 260 and includes a unidirectional check valve that allows oil filled in the housing 210 to flow only in one direction from the lower part to the upper part. A path 261 is formed. The second speed control channel 261 has a shape with a cross-sectional area that increases from the lower part to the upper part, and a check ball 262 is provided on the inner side thereof. The check ball 262 has a cross-sectional diameter that is larger than the lower diameter of the second speed control channel 261 but smaller than the upper diameter. Accordingly, when the oil flows from the lower side to the upper side of the piston 260, the check ball 262 moves upward so that the oil can easily flow. On the other hand, when the oil is about to flow downward of the piston 260, the check ball 262 moves downward and is blocked at the lower side of the second speed adjustment flow path 261 to block the flow of oil.

  A coil spring, which is a return spring 270, is inserted into the housing 210 below the piston 260, and a hydraulic control rod 280 is located at the center of the return spring 270.

  The hydraulic control rod 280 has its head portion 281 inserted into the first speed adjustment channel 254a of the piston rod 250, and controls the flow rate of oil to control the descending speed of the piston rod 250 and piston 260. The head portion 281 of the hydraulic control rod 280 is formed in a spherical shape, has a slightly smaller cross-sectional diameter than the first speed adjustment channel 254 a of the piston rod 250, and the neck portion 283 that is the lower end of the head portion 281 is smaller than the head portion 281. It is formed thin so as to have a cross-sectional diameter. The lower portion 282 of the hydraulic control rod 280 is connected to the flow control bolt 285 in a pivot manner.

  An elastic force adjustment plate 272 that supports the return spring 270 is positioned below the return spring 270, and a hole is formed in the center of the elastic force adjustment plate 272 so that the hydraulic control rod 280 passes therethrough.

  The elastic force adjuster 274 is in contact with the lower side of the elastic force adjuster plate 272, and the elastic force adjuster 274 has a threaded portion formed on the outer peripheral surface thereof and is inserted into a through-hole of the lower packing 290 coupled to the lower portion of the housing 210. Screwed together. Therefore, when the elastic force of the return spring 270 is to be adjusted, the compression rate of the return spring 270 can be adjusted by rotating the elastic force adjuster 274 and moving the elastic force adjustment plate 272 up and down. . A lower portion 282 of the hydraulic control rod 280 and a flow rate control bolt 285 are inserted into the elastic force adjuster 274.

  Next, the operation of the multipurpose hinge device according to the third embodiment configured as described above will be described in detail.

  As shown in FIGS. 21 to 29, in the multipurpose hinge device of the third embodiment of the present invention, the external rotational force is transmitted to the shaft 231 of the camshaft 230, so that the internal components are as follows. Operates on.

  First, the case where the housing 210 of the multi-purpose hinge device according to the third embodiment of the present invention is embedded and fixed at the upper and lower ends of one side of the rotary door, and the shaft 231 of the camshaft 230 is fixed to the door frame is an example. Will be described.

  When the user opens the door, when the rotational force is transmitted to the camshaft 230, the guide pin 240 tends to move downward along the lifting guide hole 232. Then, as shown in FIG. 25 and FIG. 26, a downward force acts on the piston 260 interlocked with the guide pin 240, and the oil in the lower chamber 265 located on the lower side of the piston 260 is changed by the opening of the check valve. It begins to flow into the upper chamber 266 via the two-speed adjusting flow path 261.

  As a result, the guide pin 240 moves in the elevating section (a) as in the operating state in the elevating guide hole 232 shown in FIG. 24B, and the piston rod 250 and the piston 260 compress the return spring 270. Descend. Thereafter, when the camshaft 230 continues to rotate, the guide pin 240 reaches the second stop section (c), and the first stop portion 232b of the first stop section (b) in which the elevation guide hole 232 is bent Since the movement is restricted, the piston 260 is maintained in a stopped state.

  On the other hand, in the multi-purpose hinge device of the third embodiment, when a slight external force is applied in the opposite direction in which the camshaft 230 rotates, that is, when the door is closed, the guide pin 240 passes through the bent first stop 232b. 2 Get out of the stop section (c). In this case, the piston 260 starts to move upward due to the repulsive force of the compressed return spring 270, and the guide pin 240 connected to the piston 260 also rises along the lifting section (a) of the lifting guide hole 232.

  At this time, the oil in the upper chamber 226 on the upper side of the piston 260 cannot pass through the second speed adjustment channel 261 by the check ball 262 in the check valve, and passes through the reduction channel 253 and the first speed adjustment channel 254a. It moves to the lower chamber 265 side below the piston 260. As shown in FIG. 27, since the hydraulic control rod 280 is positioned in the first speed adjustment flow path 254a, the flow amount of this oil is small at the initial rise of the piston 260, and the piston 260 also rises at a low speed. .

  Then, as shown in FIG. 28, when the reduced diameter portion of the hydraulic control rod 280 is positioned in the first speed adjustment flow path 254a, the oil flow amount increases, and the piston 260 rises at a high speed, as shown in FIG. As described above, when the head portion of the hydraulic control rod 280 is positioned in the first speed adjustment flow path 254a (that is, when the head portion is positioned close to the rising limit point of the piston), the amount of oil flow decreases again, so that the piston 260 Rises at a low speed.

  As described above, in the hinge device according to the third embodiment of the present invention, the means for raising and lowering the piston rod by opening and closing the door is the same, and when the door is returned, the piston moves up and flows from the upper chamber to the lower chamber. The speed adjusting means for adjusting the flow rate of the oil to adjust the rising speed of the piston in multiple stages has been modified.

  As a result, also in the hinge device of the third embodiment, the check valve is opened by opening the door, and the oil flows to the upper chamber 266 through the second speed adjustment flow path 261, so that the piston 260 is easily lowered. The door is opened, and the stopped state is maintained in the first and second stop sections (b, c).

  Further, when the door is closed, the check valve is kept closed, so that the oil in the upper chamber 266 flows to the lower chamber 265 side via the reduction channel 253 and the first speed adjustment channel 254a. At this time, due to the structure of the hydraulic control rod 280, the ascending speed of the piston 260 is controlled to three stages of low speed, high speed and low speed, and the door is also closed at three speeds.

  The hinge device according to the third embodiment can also be applied to a hinge-type hinge device as in the first embodiment shown in FIG. FIG. 30 is a cross-sectional view showing an installation structure when the third embodiment is applied to a hinge type hinge device.

  As shown in FIG. 30, the hinge type hinge device attached between the door and the door frame has a movable side hinge plate 302 fixed to the door, a fixed side hinge plate 304 fixed to the door frame, and the movable side hinge plate 302. A thrust bearing 305 is provided between the upper hinge knuckle 301 fixed to one side and the lower hinge knuckle 303 fixed to one side of the fixed hinge plate 304 in order to reduce friction due to rotation.

  The hinge device is assembled by inserting the components of the third embodiment into the upper and lower hinge knuckles 301 and 303. In this case, the stop angle connecting plate 314 is engaged with the shaft 331 of the camshaft 330 protruding above the upper packing 320, and the stop angle connecting plate 314 is fixed to the upper hinge knuckle 301 by the stop angle adjusting bolt 306. Accordingly, the camshaft 330 rotates as the door is opened.

  When the camshaft 330 rotates, the guide pin 340 descends along the elevation guide hole 332 as in the operation of the third embodiment, and the piston rod 350 and the piston 360 connected to the guide pin 340 move the return spring 370. Lower while compressing.

  When a little external force is applied in the door closing direction, the guide pin 340 is disengaged from the stop section of the elevation guide hole 332, the guide pin 340 and the piston 360 are raised by the repulsive force of the return spring 370, and the speed of the door is adjusted. close.

  In such a multipurpose hinge device according to the third embodiment of the present invention, the connecting plate 314 engaged with the camshaft 330 is rotated by a predetermined amount in advance, and then fixed with the stop angle adjusting bolt 306 to be fixed to the camshaft 330. By adjusting the rotation angle range, the opening / closing rotation range and the stop angle of the door can be adjusted.

  Also, the hinge device adjusts the compression rate of the return springs 270 and 370 by moving the elastic force adjusting plates 272 and 372 with the elastic force adjusters 274 and 374, and the closing of the door is performed by changing the oil flow amount. The speed can be adjusted.

  The multipurpose hinge device according to the third embodiment of the present invention moves the hydraulic control rods 280 and 380 inserted into the first speed adjustment flow path 254a, which is an oil passage, up and down with the flow control bolts 285 and 385. The closing speed of the door can be adjusted by changing the flow rate.

  Hereinafter, the structure which applied the hinge apparatus of 3rd Embodiment of this invention to the door of the box-shaped up-down rotation type refrigerator is demonstrated.

  FIGS. 31 and 32 are, for example, an exploded perspective view and an assembled perspective view showing a connection structure when the multipurpose hinge device according to the third embodiment of the present invention is applied to a vertical rotating door, and FIG. 33 is shown in FIG. It is an enlarged view of a housing. However, in addition to the third embodiment, the hinge devices of the first and second embodiments can also be applied in the same manner, and can be applied to devices other than the refrigerator.

  As shown in the figure, the multipurpose hinge device 200 according to the third embodiment of the present invention is inserted into the embedded holes 204 formed at both ends of the refrigerator door 201 when applied to a box-shaped refrigerator vertical rotation door. The door 201 is coupled to the refrigerator main body 202 so as to be rotatable in the vertical direction with both ends of the door 201 as axes. In this case, it is preferable that the housing 210 and the embedding hole 204 have a rectangular cross section as shown in FIG. 33 in order to prevent the housing from rotating when the door rotates.

  In the multipurpose hinge device 200, the shaft 231 of the camshaft 230 is fitted to the hinge pin 206. That is, the shaft 231 of the camshaft 230 has an outer peripheral surface formed in a polygonal cross section, the hinge pin 206 has an inner surface formed in the same polygon as the polygonal outer peripheral surface of the shaft 231, and the camshaft 230 and the hinge pin 206 are mutually fitted. Combined.

  Moreover, although the outer peripheral surface of the hinge pin 206 is also formed in a polygon, in 3rd Embodiment of this invention, it has a hexagonal cross section as an example. The hinge pin 206 is further fitted into a through hole formed in the stop angle adjusting nut 207. Here, since the through hole of the stop angle adjusting nut 207 is formed to have the same shape as the outer peripheral surface of the hinge pin 206, the through holes are closely fitted to each other.

  The stop angle adjustment nut 207 has a splined outer peripheral surface, and a spline boss hole 205 is formed inside the main body fixing portion 203 that meshes with the stop angle adjustment nut 207. With such a configuration, the stop angle adjusting nut 207 is inserted and fixed in the spline boss hole 205, and can be reinserted after being separated if necessary.

  Therefore, when the multipurpose hinge device according to the third embodiment of the present invention is applied to the vertically rotating refrigerator door using the door connecting structure, the door 201 is opened upward by the user. When the door is closed, the multi-purpose hinge device 200 is closed downward while the speed is adjusted in three stages of low speed, high speed and low speed as in the operation of the third embodiment.

  As a result, the external appearance of the refrigerator is prevented by exposing the hinge device to the outside, and it is closed as fast as possible by appropriate hydraulic control. When the door is closed, a large impact is transmitted to the refrigerator body by its own weight. Problem can be solved.

  Moreover, in the refrigerator door connection structure by 3rd Embodiment of this invention, the stop angle of the door 201 can be adjusted according to a user's selection. That is, the user rotates the cam pin 230 in advance to an arbitrary set angle by rotating the hinge pin 206. Thereafter, the hinge pin 206 is inserted into the stop angle adjusting nut 207, and the stop angle adjusting nut 207 is inserted into and fixed to the spline boss hole 205 of the main body fixing portion 203.

  As a result, since the camshaft 230 of the multi-purpose hinge device 200 is rotated in advance by a certain angle as described above, the guide pin 240 moves in the lifting section (a) shown in FIG. Since the power distance is reduced or extended, for example, the rotation angle of the camshaft 230 (that is, the door opening angle) reaching the first and second stop sections (b, c) is also changed. The stop angle and rotation range can be adjusted.

  Therefore, when the stop angle and the rotation range of the door 201 are set in advance by the above method in consideration of the opening angle of the refrigerator door that the user uses most frequently, the use becomes convenient.

  Further, as shown in FIGS. 34 and 35, the hinge device of the third embodiment of the present invention is also applied to the connection of a left-right rotation type door in which the rotation axis of the hinge device and the rotation axis of the door coincide, for example, a refrigerator door. can do.

  In the refrigerator door connection structure, the door 401 is connected to the refrigerator main body 402 by the multipurpose hinge device 400 so that the door 401 can be rotated to the left and right with respect to the refrigerator main body 402 with one side end of the door 401 as an axis. Therefore, an embedded hole 404 corresponding to the shape of the multipurpose hinge device 400 is formed in the upper end and / or lower end of the door 401, and the multipurpose hinge device 400 is inserted into each embedded hole 404. The At this time, the shape of the embedding hole 404 corresponds to the outer shape of the housing of the multipurpose hinge device 400, and preferably has a quadrangular cross section to prevent rotation.

  In the multi-purpose hinge device 400, the upper end of the housing is coupled to the upper support bar 403 of the door with a bolt, and the first reinforcing plate 405 is provided on the upper support bar 403 of the door to improve the fastening force of the multi-use hinge device 400. To be attached.

  In the multi-purpose hinge device 400 attached in this way, the shaft 409 of the camshaft projects above the upper support bar 403 of the door. The outer periphery of the shaft 409 of the camshaft has a polygonal cross section and is fitted inside the stop angle adjusting bolt 408.

  The stop angle adjusting bolt 408 is formed so that the inner peripheral shape of one end thereof corresponds to the outer peripheral shape of the shaft 409, and the outer peripheral surface of the other end is formed in a spline shape and meshes with the fixing hole of the main body fixing tool 406.

  The main body fixing tool 406 is formed in a “F” shape having a fixed length, one side meshes with the stop angle adjusting bolt 408, and the other side is fixed to the refrigerator main body 402 by the fixing bolt 407. A boss hole having a spline shape that meshes with the stop angle adjusting bolt 408 is formed on one side of the main body fixture 406, and a second reinforcing plate is stacked on one side of the main body fixture 406 to improve the coupling force. Can also be fixed.

  In the refrigerator door connection structure of the third embodiment of the present invention, the shaft of the multi-purpose hinge device 400 is connected by the main body fixture 406, so that the multi-purpose hinge device 400 operates as in the above-described embodiment and the door. 401 is closed.

  In addition, the door connection structure for applying the hinge device of the third embodiment of the present invention is not only a refrigerator, but a mobile phone or notebook in which two members are expanded or folded around one axis. It can be applied to any switchgear.

  As mentioned above, although the technical idea about the multipurpose hinge apparatus of the 1st thru | or 3rd embodiment of this invention was demonstrated based on the accompanying drawing, this is only what illustrated the best embodiment of this invention, It is not intended to limit the invention. Any person having ordinary knowledge in the technical field can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

The top view of the multipurpose hinge apparatus by 1st Embodiment of this invention. FIG. 2 is a longitudinal sectional view of the multipurpose hinge device according to the first embodiment of the present invention taken along line AA in FIG. 1. FIG. 3 is a perspective view of a vertical guide for vertically guiding a guide pin that moves up and down inside the multipurpose hinge device of FIG. 2. The perspective view which shows the cam shaft which guides so that a piston rod may be moved up and down as the door opens and closes in the multipurpose hinge apparatus of FIG. The figure which shows the position of the guide pin by the action | operation of the multipurpose hinge apparatus by the raising / lowering guide hole of the cam shaft shown in FIG. 4, and the compression state of a return spring. (A) is a top view of a piston, (B) is sectional drawing about line AA of (A). (A) is a front view of the inner pipe for adjusting the return speed of the door, and (B) is a side view of the inner pipe for adjusting the return speed of the door. The longitudinal cross-sectional view of the outer pipe | tube for return speed adjustment of a door. Sectional drawing of the piston and return speed adjustment part which show the initial position where a piston is located in a top dead center. Sectional drawing which shows the pressure oil flow when a piston descend | falls by opening of a door. Sectional drawing which shows a pressure oil flow when a piston raises at 1st speed until the opening angle of a door reaches | attains 30 degrees by closing of a door. Sectional drawing which shows a pressure oil flow when a piston raises at 2nd speed until the opening angle of a door reaches 0 degrees by closing of a door. Sectional drawing which shows the pressure oil flow when a door is rotated at high speed by a strong wind. The disassembled perspective view which shows the installation structure in the case of applying the multipurpose hinge apparatus by 1st Embodiment of this invention to a hinge type hinge apparatus. The figure in the state whose opening angle is about 0 degree which shows operation | movement of the hinge apparatus by the opening angle of the door of FIG. The figure in the state whose opening angle is about 30 degrees-50 degrees which shows operation | movement of the hinge apparatus by the opening angle of the door of FIG. The figure in the state whose opening angle is about 90 degrees which shows operation | movement of the hinge apparatus by the opening angle of the door of FIG. The figure in the state whose opening angle is about 105 degrees which shows operation | movement of the hinge apparatus by the opening angle of the door of FIG. The disassembled perspective view which shows the installation structure in the case of applying the multipurpose hinge apparatus by 2nd Embodiment of this invention to a hinge type hinge apparatus. Sectional drawing which shows the principal part of the multipurpose hinge apparatus by 2nd Embodiment of this invention. The disassembled perspective view of the multipurpose hinge apparatus by 3rd Embodiment of this invention. The longitudinal cross-sectional view which shows the assembly state of the multipurpose hinge apparatus of FIG. The disassembled perspective view which shows the coupling | bonding relationship of the cam shaft of the multipurpose hinge apparatus of FIG. 22, a piston rod, and a cam shaft guide part. (A) is an enlarged perspective view showing the camshaft of FIG. 23, (B) is a view showing the position of the guide pin by the operation of the multipurpose hinge device in the elevation guide hole of the camshaft of (A). The fragmentary sectional view which shows an internal operation state when a piston descend | falls by the effect | action of the relative rotational force of the multipurpose hinge apparatus of FIG. The same figure as FIG. It is a fragmentary sectional view in the state where a hydraulic control rod is located in the 1st speed regulation channel showing the internal operation state when a piston goes up by the action of relative rotation return force of the multipurpose hinge device of FIG. . The part in the state where the diameter reduction part of a hydraulic control rod is located in the 1st speed regulation flow path which shows an internal operation state when a piston raises by the effect | action of the relative rotational return force of the multipurpose hinge apparatus of FIG. It is sectional drawing. The partial cross section in the state where the head part of a hydraulic control rod is located in the 1st speed regulation channel showing the internal operation state when a piston goes up by the action of relative rotation return force of the multipurpose hinge device of FIG. FIG. The longitudinal cross-sectional view which shows the connection structure in the case of applying the multipurpose hinge apparatus by 3rd Embodiment of this invention to a hinge type hinge apparatus. The disassembled perspective view which shows the connection structure in the case of applying the multipurpose hinge apparatus by 3rd Embodiment of this invention to a vertical rotation type door. The assembly perspective view which shows the connection structure of FIG. The enlarged view of the housing of FIG. The disassembled perspective view which shows the connection structure in the case of applying the multipurpose hinge apparatus of 3rd Embodiment of this invention to a left-right rotation type door. The elements on larger scale which show the connection structure of FIG.

Explanation of symbols

  100, 200, 400 ... hinge device, 100, 201, 401 ... door, 101 ... hinge shaft, 102, 202, 402 ... refrigerator main body, 103 ... link, 110, 210 ... housing, 112 ... flange, 113 ... guide tube, 120, 220 ... upper packing, 130, 230 ... camshaft, 132, 133, 232 ... elevating guide holes, 140, 240 ... guide pins, 141, 142, 241, 242 ... roller bearings, 149, 150, 250 ... piston rods , 150a, first flow path, 151, 260, piston, 152, overspeed prevention valve, 153a, 153b, check valve, 156, 266, upper chamber, 160, 265, lower chamber, 170, inner pipe, 171, 172 ... Eccentric grooves, 173a, 173b, 176, 177, 178 Through hole, 175 ... outer tube, 149a, 179a, 179b ... speed adjustment flow path, 179c ... third flow path, 182 ... head, 190, 290 ... lower packing, 191 ... lower seal packing, 192 ... speed adjustment nut, 193 ... speed control handle, 197 ... air discharge bolt, 253 ... reduction flow path, 254 ... flow path adjuster, 254a ... first speed control flow path, 261 ... second speed control flow path, 262 ... check ball, 272 ... elasticity Force adjusting plate, 274 ... Elastic force adjusting tool, 280 ... Hydraulic control rod, 285 ... Flow rate control bolt, 301, 303 ... Hinge knuckle, 302, 304 ... Hinge plate, 305 ... Thrust bearing, 306 ... Stop angle connecting bolt, 314 ... stop angle connecting plate.

Claims (17)

A tubular housing;
An upper seal packing having a through hole in the center and coupled to the upper end to seal the upper portion of the housing;
First and second spiral elevating guide holes are provided in a movement-symmetric structure along the outer peripheral surface of the cylindrical main body, and a shaft extends from the upper end of the cylindrical main body to the outside of the housing through the through hole of the upper packing. A camshaft that protrudes and rotates by an external force relative to the housing when the door rotates;
A cylindrical guide cylinder fixed to the inner peripheral surface of the housing, formed with first and second vertical guide holes in the vertical direction at opposing positions, and into which the cylindrical body of the camshaft is rotatably inserted; ,
Guide pins having both ends inserted into the first and second vertical guide holes through the first and second lifting guide holes, respectively,
A center portion of the guide pin is provided at the upper end portion, and is slid along the first and second vertical guide holes by the rotation of the camshaft and along the inner peripheral surface of the cylindrical body of the camshaft. A piston rod that moves up and down and has a recess formed on the lower surface that communicates with the outer peripheral surface;
The outer peripheral surface is slidably inserted into the inner peripheral surface of the housing, the inner space of the housing is partitioned into an upper chamber and a lower chamber, and the lower end portion of the piston rod is coupled to a central through hole formed in the central portion, A piston having a first flow path communicating with the upper chamber and the lower chamber via a piston rod and a central through hole, and moving up and down in conjunction with the movement of the piston rod;
At least one check valve provided on the piston, opened when the piston is lowered, closed when the piston is raised, and selectively forming a second flow path communicating the upper chamber and the lower chamber;
An elastic member that is provided in the lower chamber so as to elastically support the piston, and provides a repulsive force that raises the piston when the piston descends and returns as the door opens;
When returning the door, when the piston rod rises along the inner peripheral surface of the main body of the camshaft due to the rise of the piston, the lower chamber passes from the upper chamber via the first flow path according to the rising height of the piston rod. A speed adjusting means for adjusting the rising speed of the piston in multiple stages by adjusting the amount of oil flowing to
A multipurpose hinge device comprising a lower packing coupled to a lower portion of a housing for sealing the lower chamber. The speed adjusting means comprises at least one speed adjusting channel internally connected to a concave portion of the piston rod communicating with the first channel at right angles to the outer peripheral surface of the piston rod,
The multipurpose hinge apparatus according to claim 1, wherein when the opening angle of the door reaches a set angle, the speed adjusting flow path is closed by an inner peripheral surface of the camshaft.   The first and second lifting guide holes have a first lifting section with a door opening angle of 0 to 15 °, a second lifting section with a door opening angle of 15 to 90 °, and a door opening angle of 90 to 130 °. The multipurpose hinge device according to claim 1, wherein the multipurpose hinge device is divided into a first stop section and a second stop section having a door opening angle of 130 to 160 °.   When the door is a left / right open / close door, the cam diagram angle of the first elevating section is set to 45 to 65 °, and the cam diagram angle of the second elevating section is set to 10 to 45 °. The multipurpose hinge device according to claim 3.   When the door is a vertical door, the cam diagram angle of the first elevating section is set to 30 to 45 °, and the cam diagram angle of the second elevating section is set to 10 to 45 °. The multipurpose hinge device according to claim 3. The first elevating section is a low speed returning section when the door is automatically restored, and the cam diagram angle is set to be larger than the cam diagram angle of the second elevating section. Complement
The second elevating section is a high speed returning section when the door is automatically restored, and the cam diagram angle of the second elevating section is set smaller than the cam diagram angle of the first elevating section, and the camshaft rotates when the door is opened. Complementing the increase in opening force by proportionally increasing efficiency,
In the first stop section, the cam diagram angle is set to zero, the automatic return of the door is cut off, and the door maintains the opening angle,
The multipurpose hinge device according to claim 3, wherein the second stop section is configured such that the direction of the lifting guide hole is set to be opposite to the first and second lifting sections to increase the stopping force of the door.   2. An overspeed prevention means, which is built in a recess at a lower end of a piston rod coupled to the central through hole of the piston and further blocks the first flow path when the piston rises at an excessive speed. The multi-use hinge device described in 1. One end is fixed to the lower surface or upper surface of the target device main body, and the other end extended from the device main body is a support bracket that rotatably supports the rotation shaft of the door;
A flange fixed to the upper packing of the housing and the lower or upper surface of the door to support a housing embedded in a recessed hole formed on the lower or upper surface of the door at a certain distance from the rotation axis of the door;
A drive link having one end fixed to the shaft of the camshaft;
2. A driven link having one end connected to the other end of the drive ring in a pivot manner and the other end connected to a hinge shaft located on a target apparatus main body by a hinge. The multi-use hinge device described in 1.   The camshaft shaft is coupled to the first hinge knuckle of the movable hinge plate, the housing is coupled to the second hinge knuckle of the stationary hinge plate, and the hinge device is hinged between the door and the door frame. The multipurpose hinge device according to claim 1, wherein the multipurpose hinge device is attached.   The multi-purpose hinge device according to claim 1, wherein a housing of the hinge device is embedded in a door, and a shaft of the camshaft is coupled to a door frame. A pair of embedding holes formed at both ends of the door so that the housing of the hinge device is embedded;
A pair of body fixing portions each projecting adjacent to both ends of the door and having spline boss holes formed therein;
A pair of hinge pins whose inner peripheral surface and outer peripheral surface are polygonal so as to be fitted to a polygonal shaft of the camshaft;
A pair of stop angle adjusting nuts having a polygonal inner peripheral surface so as to be fitted to the polygonal outer peripheral surface of the hinge pin, the outer peripheral surface being processed into a spline shape, and being inserted into the spline boss hole. The multipurpose hinge apparatus according to claim 1, further comprising: An upper end is coupled to the central through hole of the piston to form a third flow path communicating with the first flow path, a head for sealing the lower end is coupled to the lower end, and a first communicating with the outside above the head. A control pipe having one through hole and moving up and down in conjunction with the movement of the piston;
An outer tube having second and third through holes in communication with the lower chamber on the upper side and a fourth through hole in communication with the lower chamber on the lower side;
In order to seal the lower chamber, the lower chamber seal packing coupled to the lower end of the housing, the lower end of the outer tube is fixed to the through hole in the center,
The control pipe has an inner diameter corresponding to the outer diameter of the head so that the head is slidably coupled, has an outer diameter corresponding to the inner diameter of the outer pipe, and is coupled to the inside of the outer pipe, In order to connect the upper region distinguished by the head to the lower chamber, the fourth and sixth through holes corresponding to the second and third through holes are provided, and the lower portion of the head is connected to the lower chamber. An inner tube having a seventh through hole corresponding to the through hole;
An outer pipe upper seal packing coupled to the outer peripheral surface of the control pipe and the upper part of the outer pipe, isolating the upper region of the inner pipe from the lower chamber and slidably supporting the control pipe;
An inner tube lower seal packing for fixing the lower portion of the inner tube to the upper recess and sealing the lower portion of the inner tube;
The second and fifth through holes and the third and sixth through holes form first and second speed control flow paths, respectively, and the fourth and seventh through holes form a fourth flow path. The multipurpose hinge device according to claim 1, wherein An upper end is coupled to the central through hole of the piston to form a third flow path communicating with the first flow path, a head for sealing the lower end is coupled to the lower end, and a first communicating with the outside above the head. A control pipe having one through hole and moving up and down in conjunction with the movement of the piston;
An outer pipe that houses the head of the control pipe on the inner peripheral surface of the upper end;
In order to seal the lower chamber, the lower chamber seal packing coupled to the lower end of the housing, the lower end of the outer tube is fixed to the through hole in the center,
The control pipe has an inner diameter corresponding to the outer diameter of the head of the control pipe so that the head is slidably coupled. The head is divided into an upper area and a lower area by the head, and is rotatable inside the outer pipe. An inner tube to be fitted,
An outer pipe upper seal packing that is interposed between the outer peripheral surface of the control pipe and the upper part of the outer pipe, isolates the upper region of the inner pipe from the lower chamber, and supports the control pipe in a slidable manner;
An inner tube lower seal packing for sealing the lower portion of the inner tube with the lower portion of the inner tube fixed to the upper recess;
First and second speed control channels formed at the same level on the upper side of the inner pipe and the outer pipe at a predetermined interval, and for communicating the upper region of the inner pipe with the lower chamber;
A fourth flow path for communicating the lower region of the inner tube with the lower chamber;
In the automatic return of the door, when the door is close to the initial state, the second speed adjusting flow path is closed by the head of the control pipe as the control pipe is raised, and the rising speed of the piston is reduced. Item 4. The multipurpose hinge device according to Item 1.   The apparatus further includes speed changing means for adjusting a flow rate of oil flowing into the lower chamber through the first and second speed adjusting flow paths to change a piston rising speed when the door is automatically returned. The multipurpose hinge device according to claim 13. A tubular housing;
An upper seal packing having a through hole in the center and coupled to the upper end to seal the upper portion of the housing;
First and second spiral elevating guide holes are provided in a movement-symmetric structure along the outer peripheral surface of the cylindrical main body, and a shaft extends from the upper end of the cylindrical main body to the outside of the housing through the through hole of the upper packing. A camshaft that protrudes and rotates by an external force relative to the housing when the door rotates;
A cylindrical guide cylinder fixed to the inner peripheral surface of the housing, formed with first and second vertical guide holes in the vertical direction at opposing positions, and into which the cylindrical body of the camshaft is rotatably inserted; ,
Guide pins having both ends inserted into the first and second vertical guide holes through the first and second lifting guide holes, respectively,
A center portion of the guide pin is provided at the upper end portion, and is slid along the first and second vertical guide holes by the rotation of the camshaft and along the inner peripheral surface of the cylindrical body of the camshaft. A piston rod that is vertically moved and communicated with the outer peripheral surface through a large number of horizontal through-holes that communicate with the outer peripheral surface at a right angle;
The outer peripheral surface is slidably inserted into the inner peripheral surface of the housing, the inner space of the housing is partitioned into an upper chamber and a lower chamber, and the lower end portion of the piston rod is coupled to a central through hole formed in the central portion, A piston having a first flow path communicating with the lower chamber from the upper chamber through a number of horizontal through holes and a central through hole of the piston rod, and moving up and down in conjunction with the movement of the piston rod;
At least one check valve provided on the piston, opened when the piston is lowered, closed when the piston is raised, and selectively forming a second flow path communicating the upper chamber and the lower chamber;
An elastic member that is provided in the lower chamber so as to elastically support the piston, and provides a repulsive force that raises the piston when the piston descends and returns as the door opens;
A lower packing coupled to the lower portion of the housing for sealing the lower chamber;
Since the outlet diameter of the central through hole is smaller than the diameter of the check valve, when the door is returned, the check valve is closed and oil flows from the upper chamber to the lower chamber via the first flow path. The piston rises at a slow speed,
The multi-purpose hinge device according to claim 1, wherein a plurality of horizontal through holes of the piston rod form a speed adjusting means for adjusting a rising speed of the piston when the door is returned. A housing whose inner peripheral surface is circular in cross section;
An upper seal packing having a through hole in the center and coupled to the upper end to seal the upper portion of the housing;
First and second spiral elevating guide holes are provided in a movement-symmetric structure along the outer peripheral surface of the cylindrical main body, and a shaft extends from the upper end of the cylindrical main body to the outside of the housing through the through hole of the upper packing. A camshaft that protrudes and rotates by an external force relative to the housing when the door rotates;
A cylindrical guide cylinder fixed to the inner peripheral surface of the housing, formed with first and second vertical guide holes in the vertical direction at opposing positions, and into which the cylindrical body of the camshaft is rotatably inserted; ,
Guide pins having both ends inserted into the first and second vertical guide holes through the first and second lifting guide holes, respectively,
A central portion of the guide pin is provided at the upper end portion, and is moved up and down along the first and second vertical guide holes by the rotation of the camshaft. A piston rod formed with a reducing flow path,
An orifice-shaped first speed control flow provided in the flow path long hole of the piston rod, having an internal cross-sectional diameter smaller than the flow path long hole, and having a cross-sectional diameter gradually decreasing in order to adjust the oil flow rate. A flow path adjustment tool in which a path is formed;
The outer peripheral surface is slidably inserted into the inner peripheral surface of the housing, the inner space of the housing is partitioned into an upper chamber and a lower chamber, and the lower end portion of the piston rod is coupled to a central through hole formed in the central portion, A piston that moves up and down in conjunction with the movement of the piston rod;
At least one check valve provided in the piston, opened when the piston is lowered, closed when the piston is raised, and selectively forming a second velocity channel communicating the upper chamber and the lower chamber;
An elastic member that is provided in the lower chamber so as to elastically support the piston, is compressed when the piston is lowered as the door is opened, and provides a restoring force that raises the piston when the door is returned;
A lower housing seal packing coupled to the lower portion of the housing;
One end is supported by the lower packing of the housing, and the other end is inserted into the first speed control flow path, and the cross-sectional area of the first speed control flow path through which oil flows is changed in multiple stages as the piston rod moves up and down. A hydraulic control rod having a multi-stage diameter at the other end,
The other end portion of the hydraulic control rod includes a first diameter portion having a first diameter, a second diameter portion smaller than the first diameter, and an upper end portion having a spherical shape having the same diameter as the first diameter. The multipurpose hinge apparatus characterized in that the speed is changed to low speed, high speed and low speed. The first and second lifting guide holes are
In the planar shape of the outer peripheral surface of the camshaft, an elevating section formed obliquely downward with a certain width so that the guide pin is inserted,
In order to prevent the guide pin from moving up and down, a first stop section formed at the same level as the lower end of the lift section;
The multi-purpose according to claim 16, comprising a second stop section formed obliquely upward from a terminal end of the first stop section so that the guide pin cannot move to the lift section. Hinge device.

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